Opc data Access Automation Specification

4.5.4.9

 

SetDataTypes  

Description 

Changes the requested data type for one or more Items 

Syntax 

SetDataTypes (Count As Long, ServerHandles() As Long, RequestedDataTypes() As Long, ByRef 

Errors() As Long) 

 

Part Description 

Count 

The number of items to be affected 

ServerHandles 

Array of server item handles for the items processed 

RequestedDataTypes  Array of new Requested DataTypes to be stored. 

Errors 

Array of Long’s indicating the success of the individual items 

operation.  

 

70 

 

---

OPC Data Access Automation Specification2.02 

See Also 

Appendix A - OPC Automation Error Handling 

Appendix D- Notes On Automation Data Types 

Example 

Dim RequestedDataTypes(100) As Long 

For  x = 1 To ItemCount 

 

RequestedDataTypes (x)  

= “some vbinteger” 

Next x 

AnOPCItemCollection.SetDataTypes ItemCount, AnOPCItemServerHandles, RequestedDataTypes, 

AnOPCItemServerErrors 

71 

 

---

OPC Data Access Automation Specification2.02